RFR: 8336873: BasicSplitPaneDivider:oneTouchExpandableChanged() should mention that implementation depends on SplitPane.supportsOneTouchButtons property [v2]

[Prasanta Sadhukhan]

> BasicSplitPaneDivider:oneTouchExpandableChanged() spec doesn't mention that it will create left/right button only if L&F supports SplitPane.supportsOneTouchButtons which is now added in javadoc..

Prasanta Sadhukhan has updated the pull request incrementally with three additional commits since the last revision:

 - typo
 - copyright year
 - L&F typo

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Changes:
  - all: https://git.openjdk.org/jdk/pull/20289/files
  - new: https://git.openjdk.org/jdk/pull/20289/files/3dfab636..359dded8

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=20289&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=20289&range=00-01

  Stats: 3 lines in 1 file changed: 0 ins; 0 del; 3 mod
  Patch: https://git.openjdk.org/jdk/pull/20289.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/20289/head:pull/20289

PR: https://git.openjdk.org/jdk/pull/20289